Legal Definition
In a legal context, 'basis' refers to the fundamental reason or justification upon which a legal claim, argument, or decision is founded. It establishes the core principle or underlying rationale for an action, contract clause, or legal finding.
Plain-English Translation
Think of 'basis' as the main reason why something happened or why a rule exists. If you need to prove something in court, the basis is the solid starting point that shows *why* your argument is correct.